DE102017200088A1 - Method for conditioning a component of a power electronic circuit and control device and motor vehicle - Google Patents

Method for conditioning a component of a power electronic circuit and control device and motor vehicle

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Publication number
DE102017200088A1
DE102017200088A1 DE102017200088.0A DE102017200088A DE102017200088A1 DE 102017200088 A1 DE102017200088 A1 DE 102017200088A1 DE 102017200088 A DE102017200088 A DE 102017200088A DE 102017200088 A1 DE102017200088 A1 DE 102017200088A1
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DE
Germany
Prior art keywords
circuit
temperature
cooling
component
measure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE102017200088.0A
Other languages
German (de)
Inventor
Franz Pfeilschifter
Christoph Baumgärtner
Martin Brüll
Michael Wiesinger
Josef Engl
Andreas Greif
Thomas Baumann
Martin Spornraft
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to DE102017200088.0A priority Critical patent/DE102017200088A1/en
Publication of DE102017200088A1 publication Critical patent/DE102017200088A1/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20945Thermal management, e.g. inverter temperature control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/1919Control of temperature characterised by the use of electric means characterised by the type of controller
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/46Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/473Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/10Vehicle control parameters
    • B60L2240/34Cabin temperature
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements

Abstract

The invention relates to a method for conditioning a component (16) of a power electronic circuit (11), wherein a component temperature (18) of the component (16) is determined by a control device (14) and the air conditioning by at least one of the control device (14) Cooling measure (27) and at least one heating measure (25) is performed. The invention provides that the air-conditioning system comprises at least one smoothing measure (28), by means of which a temporal temperature gradient (29) of the component temperature (18) is reduced in terms of amount, and the air-conditioning system provides that the component temperature (18) within a predetermined temperature band (23 ) is held.

Description

  • The invention relates to a method for conditioning (cooling and / or heating) a component of a power electronic circuit, such as an inverter (inverter). The invention also includes a control device for such a power electronic circuit and a motor vehicle with the circuit according to the invention.
  • Today, power electronics are designed to operate under uncontrollable, i. acceptable or given coolant conditions (temperature and flow rate) the predetermined performance (for example, a phase current greater than a predetermined current for a predetermined minimum period of time) as good as possible in a given coolant temperature range is met (for example, from -40 ° C to + 85 ° C).
  • This requirement requires e.g. an inverter may be over-dimensioned for most coolant operating points, resulting in costly manufacturing, or alternatively forced to limit performance, both at very high operating temperature (due to overheating) and at very low coolant temperature (coolant viscosity) can.
  • It is therefore interested in active cooling by means of a coolant. From the DE 10 2007 042 586 A1 For this purpose, a temperature control is known, which regulates an actual temperature value to a desired temperature value in a semiconductor device. The actual temperature value can be determined indirectly by means of a temperature model.
  • The regulation to a target temperature value has the disadvantage that, under certain circumstances, drastic cooling measures or heating measures are taken in order to achieve the setpoint temperature value. The resulting temporal temperature gradient can mean a mechanical load on the component.
  • From the EP 2 200 079 A1 is the active cooling of an inverter by means of a liquid cooling medium known. The delivery rate is adjusted so that the temperature of a semiconductor device remains constant. This also requires a correspondingly steep or large temperature gradient in the case of a large deviation of the actual temperature from the target value, which likewise leads to the described mechanical load (mechanical stress).
  • The invention has for its object to gently condition a component of a power electronic circuit.
  • The object is solved by the subject matters of the independent claims. Advantageous developments of the invention are described by the dependent claims, the following description and the figure.
  • The method according to the invention serves to air-conditioning a component of a power electronic circuit and can be carried out by a control device which can be designed, for example, as a control device, as e.g. is possible for a motor vehicle. The control device can be used to determine a component temperature of the component to be conditioned by means of a thermal model of the power electronic circuit and / or by means of a temperature sensor. Such a component may for example be a transistor. By the control device, the air conditioning is then performed by at least one cooling measure and at least one heating measure. This is known per se from the prior art.
  • In order to prevent this from causing mechanical stress due to uneven temple governance of individual elements of the component or generally the circuit, the following additional measures are provided by the invention. The air conditioning additionally comprises at least one smoothing measure. Smoothing measure here means that a temporal temperature gradient of the component temperature is limited in terms of amount. The cooling and / or heating of the component thus takes place with a limited degree of change or a limited rate of change of the component temperature. If you took this smoothing measure alone, this would only lead to a slower control at a setpoint temperature control. In addition, it is therefore provided that the air conditioning provides that the component temperature is maintained within a predetermined temperature band. It is therefore not regulated to a single setpoint, but the temperature may drift within the temperature band. By temperature band is meant here a temperature range or a temperature window which comprises a plurality of different temperature values or a value interval. For example, a temperature band of 0 ° C to 50 ° C may be provided for the component. Within the temperature band, the component temperature can now be guided by means of the smoothing measure between the band limits (upper band limit and lower band limit), for example with foresight, so that no drastic cooling measure or heating measure is necessary. By no setpoint is desired, but the temperature can be performed or drift by means of the smoothing measure within the band, for example, in an imminent, heat loss generating operation previously precautionary the temperature to the lower temperature band.
  • The invention provides the advantage that the component is operated gently. Here, also forward-looking, preparatory cooling measures and / or heating measures are possible to place the current temperature low in the temperature band to prepare for an upcoming phase of operation. This is possible because no single target temperature value must be maintained, but the component temperature may be adjusted in a temperature band. The smoothing measure makes sure that there is no unnecessary material fatigue, for example, the connection technique of the component, that is, for example solder joints, despite a temperature change of the component within the temperature band. If the temperature band is left, the cooling measure and the heating measure are available as component protection in order to avoid thermal stress on the component.
  • The invention also includes optional technical features that provide additional benefits.
  • The at least one cooling measure and / or the at least one heating measure may provide for the use of an external climate control system. Thus it can be provided that the circuit air conditioning power from a cooling circuit of at least one circuit external device and / or from a heating circuit of the at least one circuit external device is supplied. It should be noted here that both a cooling circuit and a heating circuit can be used both for cooling and for heating, depending on whether the circuit is arranged upstream or downstream of a respective energy sink of the cooling circuit or of an energy source of the heating circuit. Thus, in a heating circuit, the circuit can be cooled by the fluid to be heated is first passed past the circuit and thereby the fluid is preheated by the waste heat of the circuit.
  • It can also be provided a division of the air conditioning performance by the circuit is cooled, for example by means of a cooling circuit and thereby, for example, an interior air conditioning of a motor vehicle less air conditioning capacity for the interior itself is available. The development results in the advantage that e.g. a heat engine with electric air conditioning compressor and / or a heat pump of a circuit external air conditioning circuit (cooling circuit and / or heating circuit) e.g. in a motor vehicle can also be used for the circuit.
  • For a coupling of the circuit with the circuit-external air conditioning circuit of the at least one device is preferably provided that the circuit has a circuit-own cooling circuit with an active fluid cooling (for example, water cooling or air cooling or oil cooling). For supplying the air conditioning capacity, it may be provided that a mixer valve for coupling the circuit-specific cooling circuit to the circuit-external cooling circuit or heating circuit is set. Thus, the degree of the air conditioning power diverted or derived for the air conditioning of the circuit can be adjusted by means of the mixer valve. By providing its own circuit-own cooling circuit, there is the additional advantage that by closing the mixer valve first, the circuit's own cooling circuit is heated by waste heat of the component itself to obtain a predetermined or required operating temperature, so for example, a temperature greater than the lower Band limit of the said temperature band. Preferably, a heat capacity of the circuit's own or internal circuit cooling circuit is smaller than a heat capacity of a fluid amount of the circuit external cooling circuit or heating circuit.
  • The power electronic circuit can be coupled via this thermal coupling in particular with at least one device, which is an electric charger and / or a DC / DC converter (DC-DC converter) and / or an air conditioner and / or a braking resistor of an electric drive. These can be coupled with a power electronic circuit particularly effectively for air conditioning. The at least one device is provided in particular in a motor vehicle.
  • With regard to the said heating measure may additionally or alternatively be provided that a Power loss is increased within the circuit by changing an operating point of the power electronic circuit. In other words, by setting a new operating point in comparison to the old operating point, the power loss can be increased, ie the generation of waste heat. In other words, the circuit is operated more effectively than is necessary in the current request case. Thus, the heating power is produced directly in the component to be conditioned. This is particularly delay.
  • With regard to the cooling measure, additionally or alternatively, it can be provided that a power loss within the circuit is reduced by changing an operating point and, in the case of an electric machine controlled by the circuit, whose power loss is increased. This can be favorable for temporary load cases. The reason for this is that an electric machine has a larger heat capacity than the component of a power electronic circuit.
  • As described measure for changing the power loss within the circuit, in particular the following have proved, of which one or more can be used in combination. It can be converted to a driving method. For example, can be switched from a Space Vector Modulation, SVM, to a block operation. Additionally or alternatively, a switching frequency can be changed in a pulse width modulation.
  • The third measure described is the smoothing action. This may include recognizing an increase in power dissipation in the circuit based on operational strategy data. The operation strategy data describes an electric power to be converted or provided by the power electronic circuit for a future time or period. Preferably, the component temperature is then cooled to a lower band limit of the temperature band by means of a preliminary cooling. As a result, heat capacity or heat capacity is created. There may be more heat energy in the component without the component temperature leaving the temperature band beyond the upper band limit. If the power electronic circuit is located in a motor vehicle, it is also possible to use route data which, for example, describes a gradient course of a road. It can also be used camera data in which camera images are included, for example, depict a preceding hill or a slope ahead. An image recognition device can then recognize a preceding hill or a preceding road slope in a manner known per se.
  • As a particularly suitable smoothing measure for changing the temperature with predetermined absolute maximum gradients (ie limitation of positive and negative gradients), it has been found that the component temperature is regulated by means of a delta-T control (T temperature, delta difference). It is therefore not regulated to a desired value of the temperature, but instead a slope of the temperature profile of the component temperature is regulated to a desired slope. As a result, the temperature can be varied or changed unhindered within the temperature band. It is therefore independent of a fixed setpoint for the component temperature itself. Only the slope is limited or fixed to a desired slope value.
  • The method has proven particularly suitable for a power electronic circuit having an inverter for an electrical machine. In other words, the method preferably uses an inverter as the air conditioning system. The component temperature in this case relates in particular to a chip temperature, wherein the chip can act, for example, as a transistor.
  • In order to be able to carry out the method in a power electronic circuit, the invention also provides a control device. This has a logic circuit which is adapted to perform an embodiment of the method according to the invention. For this purpose, the logic circuit can comprise circuit logic components, such as logic gates, or else a microcontroller or microprocessor, which is controlled by a program code which is set up to carry out the method according to the invention when executed by the circuit logic.
  • Preferably, the use of the invention is provided in a motor vehicle with an electric drive motor. The drive motor may be part of a purely electric drive system or a hybrid drive system. The motor vehicle according to the invention has an inverter as a power electronic circuit. Furthermore, an embodiment of the control device according to the invention for air conditioning of the inverter is provided.
  • The motor vehicle according to the invention is designed in particular as a motor vehicle, preferably as a passenger car or truck.
  • In the following an embodiment of the invention is described. For this:
    • 1 a schematic representation of an embodiment of the motor vehicle according to the invention; and
    • 2 a diagram with a schematic time course of a component temperature.
  • The exemplary embodiment explained below is a preferred embodiment of the invention. In the exemplary embodiment, the described components of the embodiment each represent individual features of the invention, which are to be considered independently of one another, and which further develop the invention independently of one another and thus also individually or in any other than the combination shown to be considered part of the invention. Furthermore, the described embodiment can also be supplemented by further features of the invention already described.
  • In the figures, functionally identical elements are each provided with the same reference numerals.
  • 1 shows a motor vehicle 10 , which may be, for example, a motor vehicle, especially a passenger car or truck. Shown are a power electronic circuit 11 , an electric machine 12 , one in terms of the circuit 11 external circuit conditioning circuit 13 and a control device 14 , The circuit 11 For example, an inverter for the electric machine 12 be. The electric machine 12 For example, a drive machine for a traction drive of the motor vehicle 10 be. Through the inverter 11 can phase currents 15 in the electrical machine in a conventional manner 12 be switched. For this, the circuit 15 a component 16 In particular, it may be a chip or an integrated circuit for providing a switching transistor or a plurality of switching transistors. By means of the component 16 For example, the phase currents 15 be switched. This can be a power loss 17 arise in the form of heat at the component 16. Depending on the power loss 17 can be a component temperature 18 change. For cooling the component 16 an internal circuit cooling circuit 19 may be provided. The internal cooling circuit 19 can with the air conditioning circuit 13 be coupled. For example, by means of a mixer valve 20 a measure or amount of air conditioning capacity 21 between the internal circuit 19 and the air conditioning circuit 13 is exchanged, set or controlled. The air conditioning circuit 13 For example, by an air conditioner of the motor vehicle 10 and / or a cooling circuit or heating circuit, for example, a DC / DC converter and / or another device 22 , For example, a charger for a traction battery of the motor vehicle 10 , be.
  • The control device 14 can be a current value of the component temperature 18 determine. For this purpose, a temperature sensor can be provided. Additionally or alternatively, the control device 14 using a model, the current component temperature 18 determine. 2 shows to illustrate other functions of the control device 14 over time t is the component temperature 18 as temperature T. The control device 14 is configured to set the component temperature 18 within a temperature band 23 to keep. Is the component temperature 18 below a lower band limit 24 so can a heating action 25 be performed. Is the component temperature 18 above an upper band limit 26 so can a cooling action 27 and at least one smoothing measure 28 be performed. By the smoothing measure 28 becomes a gradient 29 the time course of the component temperature 18 amount is kept smaller than a predetermined maximum value. That is, the temperature changes more slowly over time than a predetermined maximum speed. For example, on the basis of a foresight 30 based on navigation data, an impending load or an upcoming loss value 17 be determined and the course of the component temperature 18 in a preparatory cooling 31 near the lower band limit 24 be held so that in a subsequent, predicted load phase 32 the course of the component temperature 18 to a greater extent within the temperature band 23 runs as without the preliminary cooling 31.
  • By the measures mentioned 25 . 27 . 28 can in predetermined applications, for example, the peak load phase 32 , the material of the power electronics of the circuit 11 (For example, the semiconductors) be configured with lower heat capacity, ie it can already in the production of the circuit 11 Material can be saved. Nevertheless, the peak load phase 32 can reliably be run through without overheating occurring.
  • The estimation of the component temperature 18 can be done by means of a thermal model of power electronics, so that the chip temperature of the component 16 is known. This knowledge makes it possible to design the cooling / heating of the power electronics. Here is the temperature band 23 exploited and respected for the operation of power electronics. The temperature band 23 For example, it may range from 0 to 50 ° C. This in turn means that, depending on the system, for example the illustrated drive, various thermal measures are provided to ensure the conditioning of the power electronics and compliance with the temperature band. This results in an active cooling via refrigerant circuit means, heat storage or generally the said circuit external air conditioning circuits 13 ,
  • Due to the lower material load material can be saved without the reliability of the circuit 11 to endanger. This results in a reduction of the parts list costs of the entire system "power electronics" and an upgraded cooling system, since no significant Oversizing the power electronics to provide a heat capacity to ensure full functionality in a wide temperature range is needed. Due to the limited temperature gradient results in an increase in the life of the power electronics, in particular their connection technology. The reduction in power losses over the entire operating range, as has hitherto been the case due to derating at very cold coolant temperatures due to the higher viscosity of the fluid, can be achieved by the heating measure 25 be avoided. A derating at very hot coolant temperatures may be due to the cooling action 27 be avoided, since a sufficient heat flow can be removed.
  • Decisive elements here are the temperature window or the temperature band 23 , which instead of a single setpoint for the temperature when implementing the measures 25 , 37, 28 is available. Furthermore, the material stress is reduced by the smoothing measure.
  • Overall, the control device 14 thus one or more or all of the following aspects ready:
  • Temperature window control (e.g., 0 ° C to 50 ° C) to increase the availability of maximum performance.
  • By controlling the coolant temperature in the temperature window, one obtains the following:
    • - Optimum viscosity of the cooling medium or cooling fluid (at <0 ° C, for example, the viscosity of a water-glycol mixture changes). This gives an optimal / full flow rate / flow rate.
    • - Maintaining the maximum delta T between T_j (junction temperature of a transistor) and the cooling medium T_Coolant (which reaches above 50 ° C, Delta_T_max is no longer reached because T_j_krit would be exceeded and HL destruction would result)
    • - 0 ° C is only an example here, in other systems (eg other hydraulic pressure drop), another limit may arise
    • - 50 ° C including maximum Delta_T (T_j - T_Coolant) applies here only as an example for example, an IGBT (Insulated Gate Bipolar Transistor). In another IGBT or other semiconductor switch (eg SiC), another limit may arise -> In a concrete system (concrete circuit and vehicle), the lower and upper band limit would be fixed.
  • In the motor vehicle 10 can by internal measures of the inverter itself, but also by external measures of other components in the cooling system, the component temperature in the target window (temperature band 23 ) being held.
  1. 1. Heating (heating measures 25 )
    • 1.1 Inverter heating through targeted generation of P_V (power loss)
    • 1.2 Mixing with other cooling circuits (eg interconnecting heating and inverter cooling circuits), eg a braking resistor or a heat pump in the heating circuit, would act as a heat source here
    • 1.3 Heating an internal cooling circuit 19 , until T in the target window, then slowly mixing the coolant with an outer / other cooling circuit (mixer valve 20 ).
    • 1.4 Design of the cooling circuit such that the power loss of a charging process (eg P_V from the charger or various DC-DC converters) in eg the components in the same cooling circuit depend on certain components (eg inverter or accumulator) preconditioned.
  2. 2. Cooling (cooling measures 29 )
    • 2.1 Targeted (temporary) shift of the power loss from the inverter to the electric motor:
      • - by conversion of the control method (example: conversion from Space Vector Modulation (space vector modulation) to block operation)
      • - By changing the switching frequency
    • 2.2 mixing with other cooling circuits (eg interconnecting the battery and inverter cooling circuit); the accumulator would act as a heat sink here
    • 2.3 Coupling of the inverter cooling circuit 19 with a circuit 13 by an air conditioner is present (eg the battery cooling circuit), since there is a EKK (electric air conditioning compressor) is connected
  3. 3. Smoothing of the temperature profile by temperature prediction of the coolant temperature (smoothing measures 28 )
    • 3.1 If route data (keyword: eHorizon) predict that the P_V will increase in the next few seconds / minutes, then the cooling system can be prepared accordingly (cooling more in advance).
    • 3.2 delta-T control, so that the temperature of the semiconductor decreases (eg from full load to part load or idle / no load) with a limited gradient amount or increases, so that semiconductor, connection technology and DCB (direct copper bonded) can expand or contract homogeneously despite different thermal expansion coefficients. If temperature is kept within the temperature window, this helps the life.
  • Overall, the example shows how the invention provides a temperature window and a temperature gradient control for increasing the performance and increasing the life of a power electronics actuator, e.g. an inverter, can be provided.
  • LIST OF REFERENCE NUMBERS
  • 10
    motor vehicle
    11
    circuit
    12
    Electric machine
    13
    Air conditioning circuit
    14
    control device
    15
    phase currents
    16
    component
    17
    power loss
    18
    component temperature
    19
    Circuit cooling circuit
    20
    Mixing valve
    21
    conditioning capacity
    22
    device
    23
    temperature tape
    24
    Lower band limit
    25
    heating measure
    26
    Upper band limit
    27
    cooling measure
    28
    smoothing action
    29
    Time temperature gradient
    30
    route data
    31
    Preparatory phase
    32
    Peak load phase
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 102007042586 A1 [0004]
    • EP 2200079 A1 [0006]

    Claims (12)

    1. Method for conditioning a component (16) of a power electronic circuit (11), wherein a component temperature (18) of the component (16) is determined by a control device (14) and the air conditioning is controlled by the control device (14) by at least one cooling measure (27) and at least one heating measure (25) is carried out, characterized in that the air-conditioning comprises at least one smoothing measure (28) by which a temporal temperature gradient (29) of the component temperature (18) is reduced in terms of amount, and the air-conditioning system provides that the component temperature ( 18) is held within a predetermined temperature band (23).
    2. Method according to Claim 1 wherein the at least one cooling measure (27) and / or the at least one heating measure (25) comprises that of the circuit conditioning power (21) from a cooling circuit (13) of at least one circuit external device (22) and / or from a heating circuit (13) of the at least one circuit-external device (22) is supplied.
    3. Method according to Claim 2 wherein the circuit (11) has a circuit-own cooling circuit (19) with an active fluid cooling and for supplying the air conditioning power (21), a mixer valve (20) for coupling a circuit-own cooling circuit (19) with the external cooling circuit (13) or heating circuit (13) is set.
    4. Method according to Claim 2 or 3 wherein the at least one device (22) comprises an electric charger and / or a DC-DC converter and / or an air conditioner.
    5. Method according to one of the preceding claims, wherein the at least one heating measure (25) comprises that a power loss (17) within the circuit (11) is increased by changing an operating point.
    6. Method according to one of the preceding claims, wherein the at least one cooling measure (27) comprises reducing a power loss (17) within the circuit (11) by changing an operating point and applying thereto to an electrical machine (12) controlled by the circuit (11). their power loss is increased.
    7. Method according to Claim 5 or 6 wherein the loss line (17) of the circuit (11) is changed by changing over a driving method and / or by switching a switching frequency.
    8. Method according to one of the preceding claims, wherein the at least one smoothing measure (28) comprises recognizing on the basis of route data (30) and / or camera data and / or operating strategy data that an increase of a power loss (17) in the circuit (11 ), and by means of a preliminary cooling (31) the component temperature (18) is cooled to a lower band limit (24) of the temperature band (23).
    9. Method according to one of the preceding claims, wherein the at least one smoothing measure (28) comprises that the component temperature (18) is regulated by means of a delta-T control.
    10. Method according to one of the preceding claims, wherein an inverter for an electrical machine (12) is conditioned as a power electronic circuit (11) and / or the component temperature (18) is a chip temperature.
    11. A power electronic circuit (11) control device (14), wherein a logic circuit is provided which is adapted to perform a method according to any one of the preceding claims.
    12. Motor vehicle (10) with an electric drive motor (12) and with an inverter as a power electronic circuit (11) and with a control device (14) according to Claim 11 ,
    DE102017200088.0A 2017-01-05 2017-01-05 Method for conditioning a component of a power electronic circuit and control device and motor vehicle Pending DE102017200088A1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    DE102017200088.0A DE102017200088A1 (en) 2017-01-05 2017-01-05 Method for conditioning a component of a power electronic circuit and control device and motor vehicle

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    Application Number Priority Date Filing Date Title
    DE102017200088.0A DE102017200088A1 (en) 2017-01-05 2017-01-05 Method for conditioning a component of a power electronic circuit and control device and motor vehicle

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    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102018202447A1 (en) * 2018-02-19 2019-08-22 Continental Automotive Gmbh Method for heating at least one component of a vehicle and vehicle electrical system
    DE102018212537A1 (en) * 2018-07-27 2020-01-30 Audi Ag Device and method for raising a temperature in at least part of a vehicle

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    DE102008034671A1 (en) * 2007-07-30 2009-02-26 GM Global Technology Operations, Inc., Detroit Double-ended inverter system controlling method for e.g. hybrid vehicle has a high voltage inverter with transistor switch leg that is clamped to positive high voltage rail if phase current is less than desired high voltage inverter current
    DE102007042586A1 (en) 2007-09-07 2009-03-26 Siemens Ag Method and apparatus for controlling an operation of a semiconductor device
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